base: Remove stub scoped_variant_win.h file.

base/scoped_variant_win.h

Index: base/scoped_variant_win.h
diff --git a/base/scoped_variant_win.h b/base/scoped_variant_win.h
deleted file mode 100644
index 3d6b650a3b711f964248b395b6641ba43ff4cc8b..0000000000000000000000000000000000000000
--- a/base/scoped_variant_win.h
+++ /dev/null
@@ -1,9 +0,0 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// TODO(brettw) remove this file when all callers are converted to using the
-// new location/namespace
-#include "base/win/scoped_variant.h"
-
-using base::win::ScopedVariant;